Slack + Claude Code integration
Connect Slack to Claude Code
ConnectChats brings your Slack chats into Claude Code. Ask Claude Code to catch you up, find any message and draft replies. Nothing gets sent until you approve it.
Free to start. No app to install. Every send needs your OK.
What Claude Code can do with your Slack
ConnectChats gives Claude Code a small set of tools. Claude Code calls them when you ask about your Slack chats, and only for the chats you share.
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Catch you up
Ask what you missed and Claude Code reads your unread Slack chats, then gives you the short version: who needs an answer, what was decided, what can wait.
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Find any message
The address someone sent last month, the price a client agreed to, the link from a group chat. Claude Code searches your Slack history and quotes the message.
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Draft replies
Claude Code writes the reply in your tone, in the chat's language, with the context of the whole thread. You read it, edit it, and send it.
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Send with your OK
When you approve a draft, ConnectChats sends it from your own Slack account and confirms delivery. Auto-send only runs in chats where you switch it on.
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Things to ask Claude Code
Type these in Claude Code once Slack is linked.
- Claude Code
Summarize the Slack channels I missed this morning.
- Claude Code
What did the team decide about the launch date on Slack?
- Claude Code
List every Slack message that is waiting on me.
- Claude Code
Find the Slack thread where we discussed the pricing change.
- Claude Code
Draft a reply in Slack confirming I'll send the report by Thursday.
How to connect Slack to Claude Code
It takes about two minutes. You do it once, and the same account then works in every AI app you add.
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Add ConnectChats to Claude Code
- In your terminal, run: claude mcp add --transport http --scope user connectchats https://api.connectchats.com/mcp
- Start Claude Code and type /mcp.
- Select connectchats and choose to authenticate. Your browser opens the ConnectChats sign-in page. Sign in with your passkey.
- Ask Claude Code about your messages, for example to summarize a group chat.
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Link your Slack account
- Open https://connectchats.com/app and choose Link a chat app, then Slack.
- Sign in to your Slack workspace with your own Slack account.
- ConnectChats lists your channels and direct messages, and you choose which ones to share with your AI app.
- To add another workspace, repeat the sign-in for it.
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Pick the chats Claude Code can see
Every chat is listed in your ConnectChats dashboard. Share all of them or only the ones you choose. Claude Code never sees the rest.
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Ask Claude Code about your Slack
Open a new conversation in Claude Code and ask about your chats. Claude Code calls ConnectChats when it needs your messages.
How Slack and Claude Code work together
ConnectChats links to Slack when you sign in to your workspace from the ConnectChats dashboard. Your AI app sees the channels and direct messages your own account can see. ConnectChats does not install a bot in your workspace or read channels you are not in.
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Slack in ConnectChats
Direct messages, group messages and the channels you belong to are supported, including thread replies. Each linked chat starts with its last 200 messages, then every new message arrives as it is sent. On Slack's free plan, Slack only shows the last 90 days of messages, so older ones cannot be imported either. Messages your AI app sends go out from your own Slack account, after you approve them. The free plan links 2 chat apps and keeps messages for 30 days.
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ConnectChats in Claude Code
Claude Code adds remote MCP servers with one command. Add ConnectChats, sign in once with your passkey, and you can ask Claude Code about your chats without leaving the terminal. The --scope user option makes ConnectChats available in every project. Leave it out to add it to the current project only. Claude Code needs a Claude Pro, Max, Team or Enterprise plan, or an Anthropic Console account. Tokens refresh on their own. To sign out, open /mcp and choose Clear authentication, or run claude mcp logout connectchats. Sign in once in an interactive session. Scripts and headless runs reuse the saved sign-in but cannot complete it.
Your Slack stays under your control
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You pick the chats
Claude Code only sees the Slack chats you share. Unshare a chat and it disappears from every AI app at once.
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Drafts by default
Claude Code prepares replies. You approve each one before it reaches Slack, unless you turn on auto-send for that chat.
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Stored messages are encrypted
Stored messages are encrypted with a key that only your passkey can unlock. We never train models on your messages.
Questions
Can Claude Code read my Slack messages?
Yes, once you link Slack in ConnectChats and add ConnectChats to Claude Code. Claude Code reads only the chats you share, and only when you ask it something that needs them.
Can Claude Code send Slack messages for me?
Claude Code can draft a reply and send it after you approve it. Messages go out from your own Slack account. You can allow automatic sending for specific chats, and it stays off everywhere else.
Is the Slack to Claude Code integration free?
Yes. The free plan links two chat apps and works in every supported AI app, with no limit on what you ask. No card needed.
Do I need to install anything?
No. You add ConnectChats inside Claude Code and link Slack from your browser. There is no app to download and nothing runs on your computer.
Does it work with other AI apps too?
Yes. The same ConnectChats account works in ChatGPT, Claude, Grok, Manus, Muse and any AI app that supports remote MCP servers. Link Slack once and use it everywhere.
Does my Slack admin need to approve ConnectChats?
ConnectChats signs in as you rather than installing an app in the workspace, so there is nothing for an admin to add. Some companies forbid third party clients in their policies, so check yours before you link a work account.
Does it see private channels?
Only the ones you are a member of, because it sees what your own account sees. You still choose which channels are shared with your AI app.
Can I share the setup with my team through .mcp.json?
Yes, with --scope project the server goes into .mcp.json in the repository. Each person still signs in with their own passkey and sees only their own chats.
Does Claude Code see my chats in every session?
Only when it calls a ConnectChats tool, which it does when you ask about your messages. It reads only the chats you share.
Related pages
Slack with other AI apps
Other chat apps in Claude Code
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